Article
Physics, Particles & Fields
Fabiola Fortuna, Pablo Roig, Jose Wudka
Summary: In this study, interactions between dark matter and standard model particles with spin one mediators are analyzed within an effective field theory framework. Solutions corresponding to operators with antisymmetric tensor mediators that meet various experimental constraints are obtained.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Kaustubh Deshpande, Soubhik Kumar, Raman Sundrum
Summary: Hybrid Inflation is a well-motivated mechanism for cosmic inflation, but faces hierarchy problems; by introducing a discrete twin symmetry, these issues can be addressed, leading to a natural model of non-supersymmetric low-scale inflation.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Borna Salehian, Hong-Yi Zhang, Mustafa A. Amin, David Kaiser, Mohammad Hossein Namjoo
Summary: This paper systematically derives the SP equations and relativistic corrections from the nonlinear and fully relativistic KGE equations in an expanding universe, providing insights into deviations and applicability beyond the SP system. The method presented simplifies the analysis of scalar dark matter dynamics and accurately captures deviations from the SP system towards the full KGE case, particularly in calculating the mass-radius relationship of solitons.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Carlos E. Yaguna, Oscar Zapata
Summary: In multi-component scalar dark matter scenarios, a single Z(N) symmetry is studied for the stability of different dark matter particles, with two species contributing to the observed dark matter density. The analysis of three scenarios shows that new interactions allowed by the Z(2n) symmetry can satisfy current experimental constraints over a wider range of dark matter masses and may lead to observable signals in direct detection experiments. These scenarios can serve as prototypes for other two-component Z(2n) models with one complex and one real dark matter particle.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Jose Eliel Camargo-Molina, Rikard Enberg, Johan Lofgren
Summary: Research shows that a first-order Electroweak Phase Transition is possible in the Standard Model Effective Field Theory when the barrier between minima is generated radiatively. Experimental data reveals key points that agree with a first-order transition.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Juan Carlos Criado, Abdelhak Djouadi, Manuel Perez-Victoria, Jose Santiago
Summary: This paper presents an effective field theory describing the interactions between the Standard Model and dark matter candidates. The framework includes non-redundant basis of gauge-invariant operators up to dimension six, allowing for a general description of the interactions. Specific examples illustrate the phenomenological use of this framework, highlighting the importance of non-renormalizable operators in certain cases.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Simone Biondini, Vladyslav Shtabovenko
Summary: This paper aims to study the non-relativistic limit of Yukawa interactions between heavy Dirac fermions and a scalar field, using modern effective field theory techniques not previously explored. The motivation for the study lies in explaining cosmological observations by introducing heavy fermionic dark matter particles that interact with each other through exchanging a light scalar mediator. The main novelty of this approach is the systematic study of this scenario within the framework of non-relativistic effective field theories.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Yong Du, Jiang-Hao Yu
Summary: The study precisely calculates the number of relativistic species, N-eff, in the standard model and predicts it will be measured to the percent level by CMB-S4 in the future. Neutral-current non-standard interactions are found to impact neutrino decoupling in the early Universe, subsequently modifying N-eff. The results provide a comprehensive analysis of the dimension-7 parameterized operators in effective field theory framework and offer a stringent constraint on the dimension-6 vector-type neutrino-electron operator's scale.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Adam Falkowski, Martin Gonzalez-Alonso, Oscar Naviliat-Cuncic
Summary: This paper reviews and analyzes precision measurements in allowed nuclear beta decays and neutron decay, confirming the V-A character of the interaction and updating the values for V-ud and g(A) at the 10^(-4) level. By incorporating data from mirror beta transitions in new global fits, the study also places new stringent limits on exotic couplings involving left-handed and right-handed neutrinos.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Chia-Feng Chang, Yanou Cui
Summary: This study provides an extensive analysis of gravitational waves (GWs) generated by global cosmic strings, taking into account recent developments and uncertainties in the models. The results suggest that the frequency spectrum of GW background from global cosmic strings can be used to probe the cosmic history prior to the Big Bang nucleosynthesis.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Roberto A. Lineros, Mathias Pierre
Summary: The model explores the connection between Dark Matter and neutrinos by introducing new electroweakly charged states and imposing a discrete symmetry, generating a stable Dark Matter candidate. Numerical analysis shows that the model can reproduce neutrino masses, correct dark matter density, and viable dark matter masses. Direct and indirect detection signatures are explored, showing promising detection prospects with CTA, Darwin, and KM3Net, highlighting the complementarity between these observables.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
P. Banerjee, U. A. Yajnik
Summary: The study shows a connection between the parameters of transient CP violating phase in leptogenesis and the observation of electron electric dipole moment, with the left right symmetric supersymmetric model providing an effective method to connect these parameters. The research results indicate strict constraints on the scale of U(1)(B-L) symmetry breaking and the scale of SU(2)(R) symmetry breaking.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Thomas G. Rizzo
Summary: In this paper, the interaction between dark matter and the Standard Model is studied, leading to a possible phenomenon of dark magnetic dipole moments. Through the investigation of a simple toy model, it is found that the existence of dark matter can result in outcomes that are compatible with existing experimental constraints and exhibit different characteristics once the DP is discovered. In specific parameter space regions, the invisible decay of DP may be more preferred.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Upalaparna Banerjee, Joydeep Chakrabortty, Suraj Prakash, Shakeel Ur Rahaman, Michael Spannowsky
Summary: The BSMEFT is a theoretical framework constructed when the physics spectrum beyond the SM is non-degenerate, including additional IR degrees of freedom. Constructing a BSMEFT is usually the first step after experimental evidence for a new particle is established. This paper provides BSMEFT models and their EFT Lagrangian for three different scenarios.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Raffaele Tito D'Agnolo, Di Liu, Joshua T. Ruderman, Po-Jen Wang
Summary: The authors present a mechanism of kinematically forbidden dark matter annihilations into Standard Model leptons, which precisely selects the dark matter mass that gives the observed relic abundance. This mechanism differs qualitatively from existing models of thermal dark matter, where fixing the relic density typically leaves open orders of magnitude of viable dark matter masses.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)